What does SMA stand for?

SMA stands for Simple Myopic Astigmatism. This term describes a specific type of astigmatism, which is a common refractive error in the eye where light fails to focus evenly on the retina due to an irregular curvature of the cornea or lens. In simple myopic astigmatism, one meridian of vision is more myopic (nearsighted) than the other, leading to a difference in visual acuity between the two axes.

Understanding this condition is crucial for eye care professionals as it directly impacts how contact lenses are prescribed and fitted. Accurate identification of simple myopic astigmatism allows practitioners to tailor visual correction appropriately, ensuring the best potential outcomes for patients. In the context of contact lenses, the specific needs resulting from SMA would guide the selection of lens types and designs to correct the uneven refractive error effectively.